el-Karamany Eman M N, Zaher Tarik I, el-Bahnasawy Mamdouh M
Department of Parasitology, Faculty of Medicine, Zagazig University, Zagazig.
J Egypt Soc Parasitol. 2005 Dec;35(3):953-62.
Water samples were collected form five residential areas in El-Ekhewa Village where the human populations use this water for daily activity and for consumption. These water sources were Bahr El-Baker drain, low running irrigation canal, underground water at shallow depth (3-8 m), finished piped water and underground water >35 m deep. The samples were concentrated by flocculation method and the concentrated pellets were examined by ultraviolet (UV) epifluorescence microscopy for Cyclospora oocysts. The densities of water contamination by 8-10 microm oocysts/liter in the five sources were respectively: 2400, 1900, 700, 200 and zero. This indicated that finished water was sewage contaminated. Stool samples from 109 diarrheal patients and 231 non-diarrheal ones from these areas were examined by the acid fast-trichrome stain, Saline Haemo De single slide trichrome stain and by standard bacteriologic techniques. Those with Cyclospora as single pathogen were considered (5.6%) of diarrheal and (2.3%) of the non-diarrheal individuals. The correlation between the density of water contamination and the prevalence of cyclosporiasis among the individuals of each area was significant. No doubt, water was the main vehicle of transmission in the present community. Soil contact and poultry were significant risk factors.
从埃尔-埃克瓦村的五个居民区采集了水样，当地居民将这些水用于日常活动和饮用。这些水源分别是巴赫尔·埃尔-贝克排水渠、低流量灌溉渠、浅深度（3 - 8米）的地下水、成品管道水以及深度大于35米的地下水。通过絮凝法对样本进行浓缩，然后用紫外线（UV）落射荧光显微镜检查浓缩后的沉淀，以检测环孢子虫卵囊。五个水源中每升含有8 - 10微米卵囊的水污染密度分别为：2400、1900、700、200和零。这表明成品水受到了污水污染。对这些地区109名腹泻患者和231名非腹泻患者的粪便样本采用抗酸 - 三色染色法、生理盐水血红蛋白单玻片三色染色法以及标准细菌学技术进行检测。以环孢子虫为单一病原体的患者在腹泻患者中占（5.6%），在非腹泻患者中占（2.3%）。每个地区个体的水污染密度与环孢子虫病患病率之间的相关性显著。毫无疑问，在当前社区中，水是主要的传播媒介。接触土壤和家禽是重要的风险因素。
